Suspension-chain for high-pressure electric transmission-lines.



G. M. E. PRIESTLEY. SU$PENSION CHAIN FOR HIGH PRESSURE ELECTRICTRANSMISSION'LINES.

APPLICATION FILED DEC. 20, 1910.

1,039,799. Patented Oct. 1, 1912.

WIN/[5555 barjas M, 5.1 72656 LE Ell-GUARD PEIESTLEY, 9F. ?ARZS,

.G J'ELLL PEIESTLEY ET CGMEAGNIE, F PARIS, FRANCE.

Specification of Letters Eatent.

cannon, assrenon TO SOCIET'E T-Ciikllil' FOR HIGI-I-PRESSUBE ELECTRICTRANSMISSION-LINES.

PatenteilOct.1,1912.

Application filed December 2t), 1910. Serial No. 598,445.

whom may concern:

it inoivn that I,

."as'rinr, a citizen of the a, and resident of Paris,

H'l new and useful Improvements casino-Chains tor High-Pressurellrausinission-Lincs, which inn- 1' are fully forth in the followt ion,suspension method for aerial electric transinssion lines for anypressure has been proposeil, according to which any number ot' lines canhe su 'iported by means of insuns composed either of insulating of lliliconsisting partly of insu- Cuannns Manna Repubor a porcelain. or a glassblock provided two semi-circular cavities crossing one iron Wires beingpassed through ins, in such manner that the mateintly 'unilercminn'ession. These then linked together and form n 'rupted chain.

the object of the-present application inrove this suspension chain, inorder it. more especially suitable for the h 'h pressure electrictransi. P accompanying drawings represent by Way of ea'anip'e the deviceforming the obq the present invention.

i are l a perspective View of a perinsulator. is. 9. is a verticalsection two elements linked together. p and 5 are elevation views, on asmaller scale, shon-ing arious towns of :mistrueting the ispcnsionchain.

"The porcelain insulators A. (Fig. 1) coneach of a core a, perforated bytwo holes 7) and 7)", at right angles to each other and provided Withintegral Wings 0, o, of

' and thickness as to otlezsuit- ,ince tor the given pressure of the ionline, which the device has similar porcelain insulators A, A

a linked together by a ring B; a f iron wires passed through the hole i5orcclain insulator Al, as Well as Franc through the hole 6 of theporcelain insulator A. i

The suspension chain or cable is formed by consecutively linkingtogether in the above-described manner any desired numberor". theporcelain insulators according to the t'C('{U11'(.IllQNtS.

t will be noted that the Wings (1, (2 are formed by a single continuouscurved flange which projects radially from the body of the link andextends around both ends of both openings. As a result of thisarrangement, the link is made reversible and perfectly symmetrical inspace. This flange reduces to a. minimum the possibility of theformation of short circuits; and, due to the peculiar inclined shapethereof, that portion of the flange adjacent one opening, such as Z) inFig. 2, acts a water-shed to protect the ring. or band. ll which passesthrough the other opening I) of the link. These bands or rings arepreferably made of flexible steel or iron Wire which is looped back andforth through the holes so as to form a cable of the necessary tensilestrength.

Fig. shows the complete arrangement of a suspension chain. Thetransmission line C represented is for single-phase current, but it isquite evident that itniay be for two-phase or three-phase currents.

The elements oi the chain (Fig. 3) are all of the same dimensions,Whereas the chain shown. in Fig. 4 consists of porcelain insulators A, Aof difierent dimensions which alternate.

construction as herein described, What I claim as my invention anddesire to .secure by Letter Patent is in a prising a pair of saddlesdisposed at right angles to each other, each saddle having a siniilarlylocated opening therethrough, said openings adapted to receive loops forsesuspension insulator, a link com-

